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Message Headers for Office 365 Emails

Number of views : 14
Article Number : KB0015004
Published on : 2022-01-03
Last modified : 2022-01-03 20:11:26
Knowledge Base : IT Public Self Help

How do I display and send the full headers of an email message?

If you need to send the information in the full headers of an email message (to report possible phishing or spam, for example):

  1. Follow the appropriate instructions below to first display the message headers.

    • Microsoft Outlook for Windows: Double-click the message to open it in a new window. Select theFile tab, and then, at the bottom, click Properties. The data is next to Internet headers.

    • Outlook Web App (OWA): Double-click the message to open it. Click the options icon (three dots near the top right), and then click View Message Details.

    • Outlook Express, Windows Mail, or Windows Live Mail (Windows): In the message index, right-click the message, and then select Properties. Click the Details tab.

    • Outlook for Mac OS X: In your Inbox (or other folder), right-click or control-click the message, and then select View Source.

    • Thunderbird (Windows, Mac OS X): Click View, select Headers, and then choose All.

    • Mail (Mac OS X): With the message selected, from the View menu, select Message, and then select either All Headers or Long Headers.

  2. Copy and paste that information into the email message you wish to send.

    To report an email breach, abuse, or spam, To report a phishing attack,

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